2NO2 --> N2 + 2O2 The above equation is what type of reaction?
A. single replacement
B. synthesis (composition)
C. decomposition
D. combustion

The model described the atom as a tiny, dense, positively charged core called a nucleus, in which nearly all the mass is concentrated, around which the light, negative constituents, called electrons, circulate at some distance, much like planets revolving around the Sun.

spanish:

El modelo describió el átomo como un núcleo pequeño, denso y cargado positivamente llamado núcleo, en el que se concentra casi toda la masa, alrededor de la cual circulan los constituyentes negativos, llamados electrones, a cierta distancia, al igual que los planetas que giran alrededor del Sol.

Explanation: